| dc.description.abstract | Touch panel display device such as tablet and smart mobile phone and all in one(AIO) computer and so on, that under the needing of characteristics try to get high transmittance colors quality, high contrast, power saving and fast booting. Full lamination liquid optically clear adhesive(LOCA) and Light Emitting Diode(LED) are the most favored of the key materials.
LED light source used in the backlight module, currently available products have been commonly used in edge-type backlight module.As for the LED used in the design of direct-type light source, because of the LED light source are directivity and point light source characteristics, triggered the luminance, chromaticity and uneven, difficult to module thickness thin etc. design bottleneck , so it is not yet universal. However, LCD backlight module light from the light source into the display panel is generated through the air gap and the loss of light scattering, thereby reducing the imaging quality of the screen.
The focus of this thesis is to use the optical simulation software to analyze and design the LED lens structure, the structure of the light through this lens, the light is evenly distributed among the backlight cavity, and with LOCA bonding process experiment to find the best fit parameters to prevent excess glue and adhesive thickness inequality issues, achieve uniform brightness modules with thinning and while the purpose of achieving high quality imaging. | en_US |